Question

Dada a função F(x) = ax + b e sabendo-se que F (3) = 5 e F (-2) = -5 calcule F (1\2)

Answer 1

F (3) = 5 e F (-2) = -5 calcule F (1\2)

 3a + b = 5
-2a + b = - 5(-1)


 3a + b = 5
 2a - b =  5
   5a = 10 ==> a = 2
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 3a + b = 5

b = 5 - 3a ==> b = 5 - 3(2) ==> b = 5 - 6 ==> b = - 1
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y = ax + b ==> y = 2x - 1